GE 845 Instruction Manual page 368

MONITORING
4–240
Path:
Setpoints > Monitoring > Transformer > Harmonic Derating > W1(2,3) Harmonic
Derating
FUNCTION
Range: Disabled, Alarm, Latched Alarm, Configurable
Default: Disabled
MINIMUM OPER CURRENT
Range: 0.03 to 1.00 x CT in steps of 0.01 x CT
Default: 0.10 x CT
This setting sets the minimum value for all three-phase currents to allow the Harmonic
Derating element to operate.
PICKUP
Range: 0.01 to 0.98 in steps of 0.01
Default: 0.90
PICKUP DELAY
Range: 0 to 60000 s in steps of 1 s
Default: 10 s
BLOCK
Range: Any flexoperand
Default: Off
OUTPUT RELAY X
Range: Do Not Operate, Operate
Default: Do Not Operate
EVENTS
Range: Enabled, Disabled
Default: Enabled
TARGETS
Range: Disabled, Self-reset, Latched
Default: Self-reset
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS